Oil-press.



L. HOFFMANN.

OIL PRESS.

KPPLIOATIOH FILED y 13, 1912 1,047,809 me td Dec. 17, 1912.

\\ II f/wi' i M4514 W s b w M To a whom it may cortceht:

UNITED STATES {PATENT O FIC LOUIS Hort-HAHN, or vmmwa, Anemia-nominal. I

' orn-ranss.

Be. t. known that I, Louis Hon-inns, a

subject'of the Emperor of Austria-Hungary,

residing at Vienna, Empire of Austriary, have invented certain new and useful mprovements in Oil-Presses; and 'I do hereby declare the followin to'be a full, clear, and exact description the invention, such as will enable others skilled in the art to the press are ided in t e frame and may be either solicf plates with thickened edges or each such plate may consist of-two superposed half plates provided with grooves or rforations, In the up part of the ame air ports are provldii d preferably on -opposite sides thereof, one series of such holes form of the frame showing diagrammati-.

being connected with an air compressor or other source of air under ressure.

*The annexed drawing lustrates by way of example several constructional forms of an oil press embodying my invention. Figure 1 is a vertical longitudinal section on the line 1, 1, Fig. 2 of one constructional callythe head, the press ram and the series of press plates, only one of the sidewalls be ing movable. Fig. 2 shows 'a side view of the frame looking from the side of the said movable side wall. Fig. 3 is a. transverse section of the frame on the line 3, 3, Fig. 2.

Fig. 4 shows a modification of the part. of

the framecontaining the air holes. Figs. 5 and 6 show details hereinafter'referred to.

7 is a detail section, illustrating a modifi form of press wall provided with; slots,

and Fig. 8 is'a similar view, illustrating a further modified construction of press wall."

The frame a has an open top and bottom and is prismatic in shape, preferably rectangular intransverse section as shown in gig. 3 and provided with side walls b' -b' Specification of Letters Iatent. 1 Application and im- 18. ms. sem Io. 898,810.

I theconstructionalform shown in Fi 1 one of the side walls 6 in guides in theframe in a direction'normal Patented Dec. 1'7, 1912.

is adapted to sli e Y to its face and is forced inward by springs'a or the like, preferably verse bars k or the like so that this sidewall may yield to an inward pressure. The mapressed is located .between press terial to be plates and these are laced into the frame in. which the are guided. correspon ing in'sha e and size to the transverse section of the ame may be either full or solid plates. or may be provided with grooves or perforations. Fig. 5 shows a full plate; according to this invention it has thickened edges asindicated at a and these thickened edges force inward the material rmittin of a under treatment thereby prevent ng the more perfect ressing an material from eing squeezed out beyond the edges. Fig. 6- shows two constructional forms of grooved and perforated plates each mounted. on trans These press plates of which according to the invention consists of two superposed plates (1, e and d, 1;, respectively, one or either of which is provided with perforations normal-to its face. According to Fig. 6, the upper half plate d or d is provided with such perforations f while the lower half plate is provided "on its face contiguous to the upper half plate with channels, grooves or the twohalf plates separated om each other. For use the upper half plate is sim ply laid on the lower one, thetwo then forming together a press plate. 'The channels g may also be arran ed in two series intersecting each other. frame preferably a series of air holes 7:. is

s ots g. Fi 6 shows" the upper part of the provided which are connected with an air compressor or other source of air under pressureta-t the opposite side of the frame another series of air holes h 'is provided.

A' shield'Z arranged opposite the holes h outside the frame which prevents from going to waste any oil forced out b the air current, such oil is caught by. the s ield and flows downward along this shield andunites with the oil obtained by pressing. This shield'is preferably so arranged that it is oil blownout flows down together-with the] y la er of the material to be pressed, then anot er press cloth" and then another press late is laid-on the press ram and so on until t e whole frame is charged when the press ram;

has arrived in its lowermost position. the whole pile of superposed press plates, press cloth and material may be built up outside the frame and then as an entirety put into the same. The number of press. plates.

. and layers of material so superposed depends on the height of the frame and'the, desired thickness of the oil cakes. Finally the uppermost solid press plate m is placed on the pile and thus the top of the frame is closed. When solid press plates are employed in the construction of the frame shown two of the side walls, for instance 6 and b are rigidly held in position in the frame by stops or the like, so as not to yield to internal ressure while side walls I) and b are held 1n osi-. tion by springs a. When grooved p ates,

such as shown in Fig. 6 are used preferably only one of the side walls is held in position by springs as shown in Fig. 1 so that only this one side wall can yield to internal pressure. On commencing the pressing the movable sidewall or walls are pushed outward preferably by any convenlent mechanical means so far that the oil pressed out can flow off at once and the movable side wall is flush with the shield as shown by dotted lines in Fig. 1. If now the press ram is forcedupward in the frame by any suitable means such as hydraulic pressure the oil is pressed out from the material and escapes toward the movable side wall or walls which owing to their being held in position by springs can yield so that the oil may escape freely and flow downward along the movable side wall or walls. When solid press plates are used two movable side walls are suflicient in the case of grooved press plates one movable side wall only is required. When it is desired to discharge the frame the. ile consisting of press plates and oil cakes 1S raised out of the frame gradually after the removal of the uppermost solid press plate m the press plates and oil cakes being pushed out laterally the one after the other as they come above the top of the frame. When grooved press plates are used air under pressure is blown through the air holes h whereby whenever a grooved press plate comes opposite the said. air holes currents of ,air rush through the grooves or channels 9 in the ress plates thus driving the oil accumuated in these grooves or channels through holes h opposite the holes 72. the movable side wall I) and this oil first strikes against the shield z whereb 105 of 011 is. avoided and then flows down along the movable wall .1) the air escaping together with the oil.

In the modification shown in Fig. 7 press plates with channels are used and the side walls I) I) opposite the ends of the channels 11. of the press plates are provided with vertical slots 0 opposite the ends of the said -.:=c-hannels and located in'vertical planes passing through such channels. When the press is. in. action the oil forced out esca es throu h the channels n and through the s ots 0 tot e outside of the side walls where it flows down and is led oif by suitable channels p at the bottom of the side walls.

The modification shown in Fig. 8 differs from that shown in Fig. 7 only in that the slots extend throughout the height of the side walls and in this case the side walls ma be built up of vertical rods the spaces 1e t between adjacent rods constituting the slots.

In the case of the modifications shown in Figs. 7 and 8 all the side walls may be made stationary so that the movable side walls are entirely dispensed with, whereby the construction of the-press is considerably simplified.

Of course each press plate may be rovided with two series of channels at right angles to each other, one of web series being on the one face and the other on the opposite face of each press plate or both series of channels being on the same face of the press plate. All four side walls of the press are then slotted as shown in Fig. 7 or 8.

Fig. 4 shows a modified construction of the air holes it, their outer ends lead into vertical downwardly extending slots or into a horizontal channel common to all of them, such slots or channel being open at their bottom. .The outer wall of these slots or channel then acts in the same way as the shield Z hereinbefore described and the movable side wall is more perfectly guided. Preferably press cloth is laid on the press plates in the well known manner; in case of solid pressplates the oil flows out through this press cloth.

The combined press plates above described and constructed according to the present invention offer the advantage that after separating the half plates constituting them they can be readily cleaned.- The thickened edges of the press plates secure an eflicient squeezing inward of the material and prevent the latter from being forced outward beyond the edge of the press plates. Owing to'the construction of the press as an entirety the press plates are reliably guided and the oil pressed out can flow oif freely without any losses, the elastically supported movable side walls receding, if required. The side walls can be readily removed and cleaned. If combined pressplates are used each lower press cloth may be lined with a fine mesh filter Ill cloth for reventing particles of thematerial ressed fibm enterm' the grooves or perorations of the combmed press plates.

Claims: 1- I 1. In an oil press the combination of a head plate, a press ram, a frame interposed between the head 'plate and the press ram, the latter being adapted to enter such frame press plates guided in the frame provided with a series of parallel channels in at least one of its faces, sidewalls rigidly mounted. in the frame opposite the en s of the saidchannels and rovided with vertical slots in the vertical p anes'of such channels and air ports provided at opposite sides in the upper part of the frame and adapted to come 0 .posite the ends, of the channels whereby air under pressure can be blown throu h the said channels, substantially as and or the purpose described.

2. In an oil press the-combination of a head plate, a vpress ram, a frame interposed between the head plate and the press mm,

the latter being ada ted to enter such frame, press plates guide I with a series of parallel. channels at'least on one of its faces, side walls ri idly mounted inthe frame opposite'the en of the said channels and provided with vertical slots extending throughout the height of the side walls in the vertlcal lanes of'such channels and air ports provi' ed at opposite sides in the upper part of the frame and adapted to come opposite the ends of the channels whereby air under pressure can be blown through the said channels, substantially as and for-the purpose described.

In testimony whereof, I afiix my signature, in presence of two witnesses.

L UIS HOFFMANN.

Witnesses:

RUDOLPH Fmo'xn, EDMOND Srnoub.

in; the frame provided 

